Rowland Heights lies in unincorporated Los Angeles County and is governed by the county’s short‑term rental ordinance. Under the ordinance, hosts may only rent out their primary residence (rooms or the whole home) for stays of 30 days or less, and they must obtain a Short‑Term Rental Registration Certificate from the Los Angeles County Treasurer–Tax Collector before listing the property; operating without a certificate can lead to fineshttps://ttc.lacounty.gov/str/#:~:text=Are%20you%20renting%20your%20home,Term%20Rental. Hosts must register online, pay a fee, notify neighbors and comply with occupancy and nuisance rules; accessory dwelling units and rent‑restricted housing cannot be used as short‑term rentalshttps://www.avalara.com/mylodgetax/en/blog/2024/03/la-county-catching-up-with-neighbors-on-short-term-rental-rules.html#:~:text=Accessory%20dwelling%20units%20,bedroom%2C%20plus%20two%20other%20people. The ordinance also requires hosts to collect and remit the county’s Transient Occupancy Tax (currently 12 %) within 30 days after the rental start datehttps://ttc.lacounty.gov/str/#:~:text=,Occupancy%20Tax. See the LA County STR registration site for more information.